By: Aimee Mullins

The two annual TED conferences, in Long Beach/Palm Springs and Edinburgh, Scotland, bring together the world's most fascinating thinkers and doers, who are challenged to give the talk of their lives (in 18 minutes or less). TED Talks began as a simple attempt to share what happens at TED with the world. Under the moniker ideas worth spreading, talks were released online. They rapidly attracted a global audience in the millions. Indeed, the reaction was so enthusiastic th...

TED is a nonprofit devoted to Ideas Worth Spreading. It started out (in 1984) as a conference bringing together people from three worlds: Technology, Entertainment, Design. Since then its scope has become ever broader. Along with two annual conferences -- the TED Conference in Long Beach and Palm Springs each spring, and the TEDGlobal conference in Edinburgh UK each summer -- TED includes the award-winning TED Talks video site, the Open Translation Project and TED Conver...

By: Sebastian Deterding

The two annual TED conferences, in Long Beach/Palm Springs and Edinburgh, Scotland, bring together the world's most fascinating thinkers and doers, who are challenged to give the talk of their lives (in 18 minutes or less). TED Talks began as a simple attempt to share what happens at TED with the world. Under the moniker ideas worth spreading, talks were released online. They rapidly attracted a global audience in the millions. Indeed, the reaction was so enthusiastic th...

TED is a nonprofit devoted to Ideas Worth Spreading. It started out (in 1984) as a conference bringing together people from three worlds: Technology, Entertainment, Design. Since then its scope has become ever broader. Along with two annual conferences -- the TED Conference in Long Beach and Palm Springs each spring, and the TEDGlobal conference in Edinburgh UK each summer -- TED includes the award-winning TED Talks video site, the Open Translation Project and TED Conver...

By: Dennis Hong

The two annual TED conferences, in Long Beach/Palm Springs and Edinburgh, Scotland, bring together the world's most fascinating thinkers and doers, who are challenged to give the talk of their lives (in 18 minutes or less). TED Talks began as a simple attempt to share what happens at TED with the world. Under the moniker ideas worth spreading, talks were released online. They rapidly attracted a global audience in the millions. Indeed, the reaction was so enthusiastic th...

TED is a nonprofit devoted to Ideas Worth Spreading. It started out (in 1984) as a conference bringing together people from three worlds: Technology, Entertainment, Design. Since then its scope has become ever broader. Along with two annual conferences -- the TED Conference in Long Beach and Palm Springs each spring, and the TEDGlobal conference in Edinburgh UK each summer -- TED includes the award-winning TED Talks video site, the Open Translation Project and TED Conver...

By: Jake Wood

The two annual TED conferences, in Long Beach/Palm Springs and Edinburgh, Scotland, bring together the world's most fascinating thinkers and doers, who are challenged to give the talk of their lives (in 18 minutes or less). TED Talks began as a simple attempt to share what happens at TED with the world. Under the moniker ideas worth spreading, talks were released online. They rapidly attracted a global audience in the millions. Indeed, the reaction was so enthusiastic th...

TED is a nonprofit devoted to Ideas Worth Spreading. It started out (in 1984) as a conference bringing together people from three worlds: Technology, Entertainment, Design. Since then its scope has become ever broader. Along with two annual conferences -- the TED Conference in Long Beach and Palm Springs each spring, and the TEDGlobal conference in Edinburgh UK each summer -- TED includes the award-winning TED Talks video site, the Open Translation Project and TED Conver...

By: Sal Khan

Finding the equation of the line tangent to f(x)=xe^x when x=1

Calculating derivatives. Power rule. Product and quotient rules. Chain Rule. Implicit differentiation. Derivatives of common functions. You can figure out the derivative of f(x). You're also good for g(x). But what about f(x) times g(x)? This is what the

By: Sal Khan

By: Clay Shirky

The two annual TED conferences, in Long Beach/Palm Springs and Edinburgh, Scotland, bring together the world's most fascinating thinkers and doers, who are challenged to give the talk of their lives (in 18 minutes or less). TED Talks began as a simple attempt to share what happens at TED with the world. Under the moniker ideas worth spreading, talks were released online. They rapidly attracted a global audience in the millions. Indeed, the reaction was so enthusiastic th...

TED is a nonprofit devoted to Ideas Worth Spreading. It started out (in 1984) as a conference bringing together people from three worlds: Technology, Entertainment, Design. Since then its scope has become ever broader. Along with two annual conferences -- the TED Conference in Long Beach and Palm Springs each spring, and the TEDGlobal conference in Edinburgh UK each summer -- TED includes the award-winning TED Talks video site, the Open Translation Project and TED Conver...

By: Sal Khan

Depreciation a capital asset

Life is full of people who will try to convince you that something is a good or bad idea by spouting technical jargon. Most of them have no idea what they are talking about. Don't be one of those people or their victims when it comes to stocks. From P/E r

By: Sal Khan, Monterey Institute for Technology and Education

Example of solving for a variable

You feel comfortable solving for an unknown. But life is all about stepping outside of your comfort zone--it's the only way you can grow! This tutorial takes solving equations to another level by making things a little more abstract. You will now solve fo

By: Sal Khan

The business cycle and how it may be driven by emotion

Aggregate demand and aggregate supply. Keynesian thinking. Demand-pull and cost-push inflation. Fiscal and monetary policy. Economies never have a long steady march upwards. They constantly oscillate between growth and recession. This tutorial gives a lit